C#########################################################
C This file is part of OpenAD released under the LGPL.   #
C The full COPYRIGHT notice can be found in the top      #
C level directory of the OpenAD distribution             #
C#########################################################
C
C$OPENAD XXX File_start [head.f]
      SUBROUTINE head(X, Y)
          use OAD_tape
          use OAD_rev

C original arguments get inserted before version
C         ! and declared here together with all local variables
C         ! generated by xaifBooster

      use OAD_active
      use w2f__types
      use oad_intrinsics
      use oad_intrinsics
      use oad_intrinsics
      IMPLICIT NONE
C
C     **** Parameters and Result ****
C
      REAL(w2f__8) X
      REAL(w2f__8) Y
C
C     **** Local Variables and Functions ****
C
      EXTERNAL barext
      REAL(w2f__8) T1
      REAL(w2f__8) T2


          integer iaddr
          external iaddr
C
C     **** Top Level Pragmas ****
C
C$OPENAD INDEPENDENT(X)
C$OPENAD DEPENDENT(Y)
C
C     **** Statements ****
C

         if (our_rev_mode%plain) then
C original function
C$OPENAD XXX Template ad_template.f
      T1 = X
      CALL barext(X,T2)
      Y = T2
          end if
          if (our_rev_mode%tape) then
C taping
C$OPENAD XXX Template ad_template.f
      T1 = X
      CALL barext(X,T2)
      Y = T2
          end if
          if (our_rev_mode%adjoint) then
C adjoint
          end if
        end subroutine head
